import sys
import pygame
from pygame.sprite import Group
from settings import Settings
from game_stats import GameStats
from scoreboard import Scoreboard
from button import Button
from ship import Ship
import game_functions as gf


def run_game():
    """初始化游戏并创建一个屏幕对象"""
    pygame.init()
    auto_settings = Settings()
    screen = pygame.display.set_mode(
        (auto_settings.screen_width, auto_settings.screen_height)
    )
    pygame.display.set_caption("Alien Defense")
    # 创建Play按钮
    play_button = Button(auto_settings, screen, "Play")
    # 创建存储游戏统计信息的实例，并创建计分牌
    stats = GameStats(auto_settings)
    sb = Scoreboard(auto_settings, screen, stats)
    # 创建一艘飞船,一个子弹编组和一个外星人编组
    ship = Ship(auto_settings, screen)
    bullets = Group()
    aliens = Group()
    # 创建外星人群
    gf.create_fleet(auto_settings, screen, ship, aliens)


    # 开始游戏的主循环
    while True:
        gf.check_events(auto_settings, screen, stats, sb, play_button, ship, aliens, bullets)
        if stats.game_active:
            ship.update()
            gf.update_bullets(auto_settings, screen, stats, sb, ship, aliens, bullets)
            gf.update_aliens(auto_settings, stats, screen, sb, ship, aliens, bullets)
        gf.update_screen(auto_settings, screen, stats, sb, ship, aliens, bullets, play_button)


run_game()
